| 石灰改良膨胀土的强度特性试验研究 |
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| 引用本文： | 陈爱军,张家生. 石灰改良膨胀土的强度特性试验研究[J]. 湖南工程学院学报(自然科学版), 2010, 20(2) |
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| 作者姓名： | 陈爱军 张家生 |
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| 作者单位： | 1. 湖南工程学院,建筑工程学院,湘潭,411104;中南大学,土木建筑学院,长沙,410083
2. 中南大学,土木建筑学院,长沙,410083 |
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| 摘 要： | 以广西南友公路沿线灰白色膨胀土为研究对象,对其进行了石灰改性的CBR试验、直剪试验、三轴剪切试验和无侧限抗压强度试验,探讨了其强度指标的影响因素及其变化规律.室内试验研究表明,掺灰剂量、密实度和含水量对改良土的CBR值影响较大,掺灰率对直剪试验结果影响规律不明显,三轴剪切试验的C和φ随掺灰率增加而增大,部分无侧限抗压强度试件因为掺灰较少和养护龄期较短而崩解,养护初期无侧限抗压强度与龄期成线性增长关系.
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| 关 键 词： | 膨胀土 石灰改良 剪切试验 无侧限抗压强度 |
Experimental Study on Strength Characteristics of Lime Improving Expansive Soils |
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| CHEN Ai-jun,ZHANG Jia-sheng. Experimental Study on Strength Characteristics of Lime Improving Expansive Soils[J]. Journal of Hunan Institute of Engineering(Natural Science Edition), 2010, 20(2) |
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| Authors: | CHEN Ai-jun ZHANG Jia-sheng |
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| Affiliation: | CHEN Ai-jun1,2,ZHANG Jia-sheng2 (1.School of Architecture Engineering,Hunan Institute of Engineering,Xiangtan 411104,China,2.School of Civil Engineering and Architecture,Central South University,Changsha 410083,China) |
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| Abstract: | The gray expansive soil of Nanyou Highway is added with lime and then is tested to study its strength characteristics which include CBR,shear strength.and unconfined compressive strength Its changing rule and influencing factors are discussed.Indoor tests indicate that lime adding ratio,density and water content all affect the strength of lime improving expansive soil,the rule of shear strength along with the lime adding ratio isn't clear,and the tri-axial shear strength increases while increasing the lime ... |
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| Keywords: | CBR |
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